201213231313 has 4 divisors (see below), whose sum is σ = 201214729828. Its totient is φ = 201211732800.

The previous prime is 201213231239. The next prime is 201213231347. The reversal of 201213231313 is 313132312102.

201213231313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 168536523024 + 32676708289 = 410532^2 + 180767^2 .

It is a cyclic number.

It is not a de Polignac number, because 201213231313 - 2²¹ = 201211134161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201213231113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525588 + ... + 823813.

It is an arithmetic number, because the mean of its divisors is an integer number (50303682457).

Almost surely, 2^201213231313 is an apocalyptic number.

It is an amenable number.

201213231313 is a deficient number, since it is larger than the sum of its proper divisors (1498515).

201213231313 is a wasteful number, since it uses less digits than its factorization.

201213231313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498514.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 201213231313 its reverse (313132312102), we get a palindrome (514345543415).

The spelling of 201213231313 in words is "two hundred one billion, two hundred thirteen million, two hundred thirty-one thousand, three hundred thirteen".